Step 3: Once the SpreadTrum upgrade tool is launched, click on “Load Pocket” as shown in the screenshot below.

Step 4: Now choose the firmware file and click on “Open” as shown below.

Step 5: Once the firmware file is loaded into the tool, connect your Android device to the computer using the original USB data cable. Next, click on the “Start Downloading” button to begin the flashing process.

Step 6: During the stock firmware flashing process, your device will reboot for several times. So don’t panic.

Step 7: Once the flashing process is finished, you will see the “Previous Passed” message in green color as shown in the screenshot below.

That’s it. You have successfully flashed stock ROM firmware on your Cheers C1 Android device. Now use the IMEI tool provided in the firmware file and flash original IMEI of your device. Once done, unplug your device from the computer and enjoy the native Android experience again.

If you encounter any issues while following this firmware installation tutorial, do let me know via comments.